1/*
2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test TestGCId
26 * @bug 8043607
27 * @summary Ensure that the GCId is logged
28 * @requires vm.gc=="null"
29 * @key gc
30 * @library /test/lib
31 * @modules java.base/jdk.internal.misc
32 *          java.management
33 */
34
35import jdk.test.lib.process.OutputAnalyzer;
36import jdk.test.lib.process.ProcessTools;
37
38public class TestGCId {
39  public static void main(String[] args) throws Exception {
40    testGCId("UseParallelGC");
41    testGCId("UseG1GC");
42    testGCId("UseConcMarkSweepGC");
43    testGCId("UseSerialGC");
44  }
45
46  private static void verifyContainsGCIDs(OutputAnalyzer output) {
47    output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(0\\) ");
48    output.shouldMatch("\\[.*\\]\\[.*\\]\\[.*\\] GC\\(1\\) ");
49    output.shouldHaveExitValue(0);
50  }
51
52  private static void testGCId(String gcFlag) throws Exception {
53    ProcessBuilder pb_default =
54      ProcessTools.createJavaProcessBuilder("-XX:+" + gcFlag, "-Xlog:gc", "-Xmx10M", GCTest.class.getName());
55    verifyContainsGCIDs(new OutputAnalyzer(pb_default.start()));
56  }
57
58  static class GCTest {
59    private static byte[] garbage;
60    public static void main(String [] args) {
61      System.out.println("Creating garbage");
62      // create 128MB of garbage. This should result in at least one GC
63      for (int i = 0; i < 1024; i++) {
64        garbage = new byte[128 * 1024];
65      }
66      // do a system gc to get one more gc
67      System.gc();
68      System.out.println("Done");
69    }
70  }
71}
72